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參數資料
| 型號： | TDA7449L |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20 |
| 封裝： | DIP-20 |
| 文件頁數： | 1/14頁 |
| 文件大?。?/td> | 102K |
| 代理商： | TDA7449L |
1/14
TDA7449L
June 2004
1FEATURES
■
INPUT MULTIPLEXER
– 2 STEREO INPUTS
– SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTATION TO DIFFERENT SOURCES
■
ONE STEREO OUTPUT
■
VOLUME CONTROL IN 1.0dB STEPS
■
TWO SPEAKER ATTENUATORS:
– TWO INDEPENDENT SPEAKER CONTROL
IN 1.0dB STEPS FOR BALANCE FACILITY
– INDEPENDENT MUTE FUNCTION
■
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
2DESCRIPTION
The TDA7449L is a volume control and balance
(Left/Right) processor for quality audio applica-
tions in TV systems.
Selectable input gain is provided. Control of all the
functions is accomplished by serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
LOW COST
DIGITALLY CONTROLLED AUDIO PROCESSOR
Figure 2. Block Diagram
0/30dB
2dB STEP
MUXOUTL
VOLUME
MUXOUTR
SPKR ATT
LEFT
LOUT
SCL
SDA
DIG_GND
ROUT
D98AU868
I
2CBUS DECODER + LATCHES
100K
G
L-IN1
L-IN2
100K
R-IN1
R-IN2
G
INPUT MULTIPLEXER
+ GAIN
SPKR ATT
RIGHT
SUPPLY
CREF
AGND
VS
5
8
9
7
6
19
20
18
4
2
3
11
1
10
VREF
REV. 3
Figure 1. Package
Table 1. Order Codes
Part Number
Package
TDA7449L
DIP20
DIP20
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TDA7449L_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7450 | 功能描述:音頻放大器 Car Radio Amplifier RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7451 | 功能描述:音頻放大器 Car Power Amplifier RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7454 | 功能描述:音頻放大器 Car Radio Amplifier RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7460B | 功能描述:音頻 DSP INFOTAINMENT SIGNAL RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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